gistfile1.sh

IFACE=$( ip addr show |grep UP |grep -v lo |cut -d' ' -f2 |sed 's/://' )
MAC=$( ip addr show ${IFACE} |grep 'link/ether' |cut -d" " -f6 )

cat <<EOF > /etc/udev/rules.d/70-persistent-net.rules
# This file was generated by substructure.

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="${MAC}", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
EOF

sed -i "s/${IFACE}/eth0/" /etc/network/interfaces

## Once rebooted chef kicks in, configures networking, udev, and bonding for all interfaces.
## This is just a small shim to keep eth0 up to initially reach the chef server.